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Safety Information

900338

Sigma-Aldrich

Poly(acrylic acid)

viscosity 350-700 cP , 4.0% mucilage(25 °C)

Synonym(s):

2-Propenoic acid homopolymer, PAA

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About This Item

Linear Formula:
(C3H4O2)n
CAS Number:
UNSPSC Code:
12352200

form

powder

impurities

4.0% mucilage (25 °C)

viscosity

350-700 cP

InChI

1S/C3H4O2.Na/c1-2-3(4)5;/h2H,1H2,(H,4,5);/q;+1/p-1

InChI key

NNMHYFLPFNGQFZ-UHFFFAOYSA-M

General description

Poly(acrylic acid) (PAA) is hygroscopic, brittle, and colorless with Tg at nearly 106 °C. At temperatures above 200-250 °C, PAA loses water and to become an insoluble cross-linked polymer anhydride. The solubility of dried PAA in water increases with an increase in temperature. Concentrated solutions of PAA in water are thixotropic in nature.

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 2 - Carc. 1A - Eye Dam. 1 - Muta. 1B - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

200.3 °F

Flash Point(C)

93.5 °C

Regulatory Information

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